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首页> 外文期刊>Journal of Applied Polymer Science >Biodegradable supramolecular composites of poly(ε-caprolactone) and low-molecular-weight organic gelators
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Biodegradable supramolecular composites of poly(ε-caprolactone) and low-molecular-weight organic gelators

机译：聚（ε-己内酯）和低分子量有机胶凝剂的可生物降解的超分子复合材料

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摘要

When a homogeneous hot liquid of poly(ε-caprolactone) (PCL) with (R)-12-hydroxystearic acid (HSA) or N-carbobenzyloxy-L-isoleucylaminooctadecane (CIA) was gradually cooled to room temperature, the mixture became gelatinous material and then solidified to give a PCL/HSA or PCL/CIA composite. The rheological measurements of the mixtures of PCL with HSA and CIA revealed that the organogels are formed at around 70-50°C and 100-73°C during the cooling process, respectively. Furthermore, the formation of supramolecular fibrillar networks was confirmed by the microscopic and differential scanning calorimetric analyses. The tensile moduli of both the composites were improved by the addition of CIA and HSA. Both the composites showed so high biodegradability as PCL. The fibrillar networks of the composites were also regenerated during the repeated cooling process from the isotropic liquid.
机译：当聚（ε-己内酯）（PCL）与（R）-12-羟基硬脂酸（HSA）或N-羰基苄氧基-L-异亮氨酰氨基十八烷（CIA）的均相热液体逐渐冷却至室温时，混合物变成胶状物质然后固化得到PCL / HSA或PCL / CIA复合材料。 PCL与HSA和CIA混合物的流变学测量表明，在冷却过程中，有机凝胶分别在70-50°C和100-73°C左右形成。此外，通过显微镜和差示扫描量热分析证实了超分子纤维网络的形成。通过添加CIA和HSA可以提高两种复合材料的拉伸模量。两种复合材料均具有与PCL一样高的生物降解性。在反复冷却过程中，还从各向同性液体中再生了复合材料的原纤维网络。

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